128162303 has 4 divisors (see below), whose sum is σ = 135701280. Its totient is φ = 120623328.

The previous prime is 128162297. The next prime is 128162311. The reversal of 128162303 is 303261821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 303261821 = 3307 ⋅91703.

It is a cyclic number.

It is not a de Polignac number, because 128162303 - 2¹⁰ = 128161279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128162323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3769463 + ... + 3769496.

It is an arithmetic number, because the mean of its divisors is an integer number (33925320).

Almost surely, 2^128162303 is an apocalyptic number.

128162303 is a deficient number, since it is larger than the sum of its proper divisors (7538977).

128162303 is an equidigital number, since it uses as much as digits as its factorization.

128162303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7538976.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 128162303 is about 11320.8790736409. The cubic root of 128162303 is about 504.1813393297.

The spelling of 128162303 in words is "one hundred twenty-eight million, one hundred sixty-two thousand, three hundred three".